Degradation of chlorpyrifos by ionizing radiation

Mori, M.N.; Oikawa, Hisashi; Sampa, M.H.O.; Duarte, C.L.

doi:10.1007/s10967-006-0314-3

Cited by 20 publications

(7 citation statements)

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“…These include the use of the ionizing radiation [27], photocatalytic degradation using TiO 2 as catalyst [28], photo-Fenton process [29], high-pressure arc discharge plasma process [30], biodegradation [31,32] and chemical oxidation using hypochlorous acid (HOCl) as the primary oxidant [33]. However, there has been no work related to the electrochemical degradation of chlorpyrifos.…”

Section: Introductionmentioning

confidence: 99%

Anodic oxidation of chlorpyrifos in aqueous solution at lead dioxide electrodes

Samet

Agengui

Abdelhédi

2010

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 99%

Anodic oxidation of chlorpyrifos in aqueous solution at lead dioxide electrodes

Samet

Agengui

Abdelhédi

2010

Journal of Electroanalytical Chemistry

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“…The parameters of gamma irradiation and their effects are in agreement with literature data for interaction of gamma irradiation with water medium. [23][24][25] The removal efficiency of gamma irradiation can be easily checked also by ASAP-MS, by measuring the absolute intensities of the relevant pesticide peaks before and after irradiation. For example, with reference to ties of the protonated CPS ion, m/z=351, before irradiation were 373 · 10 7 .…”

Section: Effect Of Gamma Ray Treatment On the Removal Of Cps And Cmentioning

confidence: 99%

Atmospheric Solids Analysis Probe with Mass Spectrometry for Chlorpyrifos and Chlorpyrifos-Oxon Determination in Apples

Cvijović

Marco²,

Stanković³

et al. 2019

ACSi

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Chlorpyrifos (CPS) is a toxic pesticide present in several pesticide formulations, with low degradability by natural processes. The degradation leads to the toxic metabolite chlorpyrifos-oxon (CPO). The analytical techniques used for the CPS and CPO analysis, like UPLC-PDA and GC-MS, are accurate but also expensive and time consuming, and they need sample pretreatment. In the search of a more rapid and simple analytical procedure, atmospheric solids analysis probe with mass spectrometry (ASAP-MS) was optimized for the determination of CPS and CPO in apples (Malus domestica "Idared"). The identification of the analytes was based on protonated ion and isotopic pattern, while the quantification was based on peak intensities. The obtained results were confirmed by re-validated UPLC-PDA and GC-MS techniques. CPS and CPO concentrations determined by ASAP-MS and UPLC-PDA showed moderate discrepancies (on average by 10-20%), thus demonstrating that ASAP-MS can be a semiquantitative tool for the quantification of these compounds. As additional goal of this work, the efficiency of a gamma irradiation treatment to remove CPS and CPO from apples was tested by analyzing their content before and after the irradiation: 89-99% of CPS and CPO were degraded with doses of 3.5-3.8 kGy and 66-72 h of irradiation per sample. Identical degradation results were obtained by UPLC-PDA and ASAP-MS, indicating that the latter technique is well suitable to rapidly check pesticide degradation in apples.

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“…This study proposed the degradation mechanism including four possible pathways for atrazine degradation according to the degradation products. Mori et al (2006) presented preliminary studies of the removal of chlorpyrifos, an organophosphate pesticide, by exposition to ionizing radiation, to be applied in pesticide container decontamination.…”

Section: Treatmentmentioning

confidence: 99%